Control for continuous projectors



\ Feb. 12, 1929.

F. M. HALL CONTROL Pm CONTINUOUS PROJECTORS Filed Dec. 15, 1926 2 Sheets-Sheet 1 m P. m F

Wham 4.1 77% A TTORNEYS.

Feb. 12, 1929.

F. M. HALL CONTROL FOR CONTINUOUS PROJECTORS Filed Dec. 15, 1926 2 Sheets-Sheet 2 V INVENTOR. 7

WMM

ATTORNEYS.

.{Ihjis -inyention .relates to a continuously ..ope rable;gmotion; picture projector, and-per} 'tainstomeehenism for controlling intermit 'tent' operatien Whereby' a selected picture or partthereof may be projected and then "stopped to be ready i'o r another cycle ofv f'operation. It is an object of thisinventionlto provideneehanism of the character described which requires only attention by the operator for starting the projector, the latter stopping autoinatically'. More particularly,theinven- "tiQZLIQlatBS toja deviceadapted toybe con-u trolled by'a fcoin or check. Y

in .jorder. to insure continuity. The present i nventionhafsior its primary object the pro. ,7 j vision'of meansiwhereby'the travel of thefilm I actuating mechanism a given distance, causes the stopp'ageiofthe motive mechanism. An. other object of this inventionis toprovideg eans of thecharacter just described which mc'ludes -adju stment. to," accommodatejthe ma, f

chineto film'of ia variety of lengths. 'Afur-j thergobject lof this. invention is to provijdea novel coin control mechanism.

drawing-in'whi hz.

I eehanism, parts {of the coin chutej being' he:.l inez2f2.o.f Fig.1; Fig. 8 is'a section 'seen on tlie brokenline 33 of Fig. 2 showthe-jcoiirstfrigger'; Fig... 4 .is a section. as nfthefline' kjkfof Fig. 2;. and Fig. 5' a planllviewf of section as seen on the line 5iof -F gs zfi Beferring with {projector which isfarrangedto project; Y apicturebeginning after the end of aprevious projectionwithoutrequiring rewinding ;-.-r.. ;attention toqthe film is now practicable. *ln-suchfmachines, janendless strip of film is .emplOyedandasingle rolllupon which and 1;fromwhichthefilm is'wound. Such a device, lends itself tocontrol, by mechanism which willstart the advance of .the film and then 7 automatically stopit.v f-However', in the case of a 'complete picture, it' is essential that the xfilmdalway's start; and stop atthe same place,

J*These objectsltogether with other objects and?;correspondingjaccomplishments are ob tained by means .fofthe embodiment of my 7 invention illustratedgin the accompanying Eig.; }-1 is afsidelelevation of the meahown in section; FigureZis a section asseen ventlon. At theendofshait 23,is worm 27/ p e ore? particularity;.-to the. I r i v reca h :61 s pr vid lpositivelwadvancing'film for the projecting machinelj 'shaft is. shown i and "may "be: connected to a variety "of mechanisms 3 Tasmania. mmjor PASADENAJCA LIFO Nm. Assienon TOFLORENOE town I j nNEs NnvvILLIAM STEWART,'ZBO'1H ornos ANGELES, CALIFORNIA.

r conrnon ron oonrrivuous r nozrno'rons. i'

Applicati onliled December 15, 1926. Serial'No. 154,886.?

The'shaft .6' is journaled inf in a frame .7 and has secured-thereto bevel gear 1, g bevel pinion 9 is inmesh withthe bevel gear and is mounted upon a shaft' having a; driven pulley'lO indicatedin dotteddines- F g.1. The driven pulley is; geared to the" drive pulley 11 of an electric motor by means-j ofa belt 13. The motor 12 serves tofdrive" the shaft 6 and thereby move the film or other mechan1sm. Electric current is suppliedto the motor' through conductors 14. One of these conductors leadsto. a1 switch 15 for controlling the fiOW-of-current to the motor. By

opening and 'closi'ngthe switch, the motor may be started andsstopped. This switch is a cam operatedfrom the. switch.

-70' controlled by mechanismactuableby a coin,

or check to closethe switch ,andactuable by I hesha Sitarp ngv '17 isa drivegear set comprising three, gears marked '18, 19, a1'1d 20. .A shift.lever 21.pivjoted'at 22 is securedto the gear set by means ofjfa yoke in the manner-common withysuch gears:- .By means of the shiftlever, the gear set may be moved alongth'e shaft 17mm se-- lected position. A ,driven shaft 23has se-" cured thereto in fixedposition, three gears .85- '24,"i25,.and 26, spaced from one-another in fixed po'sition upon shaft-.1235; Gears 24,25, and 26 are arranged to be 'meshed: with their corresponding a gears .18, 19, and frespect1vely, one pair of gears being meshed. at; a time-y.- Obviously, when gears 20 and '26 are P meshed, the speed of shaft 2awi11 be highest, and when gears 19 and are; meshed, there Q will an ermediatepeed. rheiqwest is Obtained With se 8 and 24. meshing.. Obviously any. numberfofygp d I sired, may be. obtainedrby suitable ige ar" structure. Theparticular details of the gear" I structure are not pertinent. to the present inmeshing with a worm gear'i28.- Worm gear device-comprising'a cam :30 atfthe end.'

With apredetermined number of-revolutionsf of theshaft dthere'will be one revolution of the. cam 30. The cam. shaft 29 isjo'urnalled in brackets forming apart of. frame31Q Pivotally mounted .upon the frame 31 is a lever 32, to the iend oif xwhich -is. attached a tension spring 33. tending to" move the end e omef-caseawsuch as advertising devices and operation oiithe machine.

WhabfI ClaImv-lS'fj" 'edlt ofSaid sWitch for opening and closing the latter,%spring'means tending to swing said lever to close said switch, a pivoted trigger saidlhtrig 'gerhaving an arm for operation thereof -=at=wi11, spring means tending to hold aid trigger' in' position engaging and holdable "longitu-dinallyfa' laterally projectable latich on said bararranged to be projected s to engage said lever, spring means tendngri to project said latch, an abutment enageable withsaidlatch to retract the latter t one limit of the bars travel, springmeans v'cajtch forlsai'dlever including a bar movilongitudinall ,and then permit returnmovelow point. i v 2'. Amechanism for operating a switch to control a motorcomprising a switch operat inglever foropening and closing'the switch,- A pring means tending to swing saidleverto close. said switch, pivoted trigger having a :jaitchjarraii gedtobe hooked over and .to hold 'nieans tendingltdhold said trigger in posiwitch open, a one-way catch for said lever aterally; projectable latch on said bar arranged; to be projected so as to engage said so asto dispose-the latterinswitch open posiatlon, and a restorlngidevlce for movlng said permit ng return -movement, the latch on said'ba j bei' g'retractedupon the bar engaging sald camfatits low point; 7

3; A mechanism' for operating a switch in d ngga switchoperating bar secured to sai'd for holdingisaid barinswitch open position, s id itriggerbeing operable at will to release banfor'iretracting the latter to switch open 1position,"resilientmeans tending to move said Where it is desirable to charge no fee for;

, l.; -A mechan ismr-for operating a switch comprising aisw tch operatinglever connect-1 having-a 'eatcharrangedto be hooked over and-hold said lever-in switch open position,

ngsa'id-"Iever with saidswitch open, a oneendingto move-said barwith said latch engaging'said lever so as to dispose the latter'in switch open position, anda restoring device for operating'saidbarso-as tomove the latterv L-m'ent; upon t e latch on i said bar being re-' 1tractedupongtheb'arengaging saidcam at its 1 tion engaging and'holdingsaid lever with the nelud'ing a 7 bar movable longitudinally, a"

flever springmeans tending to projectsaid' atch, an} abutment engageable' with said atch to retract the latter at one limit of the bars 'travel," spring means tending to move isaid bariwith'said latch" engaging said lever barlongitudinally in' one direction andthenf s 'itch";for opening and closing the latter,re--- slllentflmeansftending to move said switch perat ng'bar' 'to close said switch, 'a trigger" said bar, a one way catch engageable with said.

catch to switch open position and a restoring device-for movingsaid catch to position env gaging said bar when thelatter: is in switch I closed position and tolhold the latterin such position and operable torelease its hold thereoniand permit movement of said catch in the opposite direction.

4. Mechanism for controlling motor by-' operation of a switch comprising a switch Y operating bar for-opening -a'nd. -closingthe switch, resilient means tending to move said switch operatingbar to close said switch, atrigger i or holdingsaid bar 1n switch open 7 position, said trigger bemg operableat ,Wlll' torelease said bar, a one-way catch engageengaging said bar when the latter is-in switch able with said bar fori'etracting the.latter I to switch open positlon, resilient means tendf 'ing to -move said catch tos'wltch open post" closed position and to hold the latter in such" :"position duringan interval and then to re-v lease its hold thereon andpermitmovementof said catch in the opposite direction. Y

= 5. .A mechanism for operating a switch ing the latter, Spring means tending to swing said lever to close said switch, a trig-V ger arranged to hold said lever in switch open position, said trlgger belngarranged to 'be swung at will to release said'lever, spring' means tending to hold'said trigger in posi-V tion engaging and holding the latter With said switch open,'a one-way catch device 'for said I lever including a laterally projectable latch gsaid; leveriin switch. openposition, said triggerbeing" arranged to be swung at will, spring 1 arranged 'to be ro'ected' so as to en a e said b v i b b toretract the latter-"at one limit of the de vlces travel, spr ng 'meansj'tending .to move said device-with saidilatchengaging said lever so as to dispose the latter in switch "open posltlon, and a cam having ajsuri ace for operating sa-idbar so as to move the latterlongitudinally and then permit return move 7 ment, the latch on saiddevice beingretracted 7 upon the device engaging saidcam atits low I point.

6 Mechanism for -icontrolling a switch 'comprlsmg'a switch operat ng lever connected to the switch for opening and closing I the latter, spring means-tending to swing said lever toclosesald switch, a triggerarranged to hold saidleverinswitch openposit1on, sa1d tr gger being arranged to be swung at wlll and to release said lever, spring means I tending to holdlsaid trigger position engaging and holding saidJIeYer with said .a switch open, a one-way catch device for said" lever including a laterally pr ojectab'l'e latch arranged to be projected so -as to engage said f I lever, spring means tending to projectsaidj latch, an abutment engageable Withsaid latch to retract the latter atone limit, spring meensmending tc' mozvesaidadevice-with a'iclfl 8.. Agmechenism lfmlcontlflling a; latch: engaging said: lever: s0 as te: dispose-the; ;compl*ising;a swltch opemltimgelgveavfor 9p. latter; in switch open position, and. a restoreing cleviceior operating:said'catchcclevice. Y i 7A mechanism for c'pemtingit 'switchi,

comprising a, switch operating. lever' connectecl to said switch for operatingrancl clos- 111g the latter, spiting means tenclingvto swing; saiclllever to; close saiclcswi-tchfai-trigger 'ar- 'rangegl to hold" saicl lever-in switch. open position,- saicltrig-gei being arranged tobe- ,swung at will and torelease' said lever; spring,

means tendingto holcl said trigger injp'ositicn engaging and holding vsaid level" with said switch open, an one-Way catch clev'iceforjsaicl 7 lever including aulaterallywpro j ctabledle-bch arranged 06' be projected s0 asto} engage Said lever spring mean s. vtending "00 project said latch, "means to actuate: saicllatch to retract Qt he latter, spring-"means lending ftc move said device with said latchen'gaging, said: lever so as, to dispose-the latter in switchj o'penposi'tion, encl zrczim havinge surface 7 W V lmve-heremnte Subscribed my hame th-isfith :{latter longitudinally and then' p'ermit return" T e rm'ovement "I'i for operating said device so as to move vthe i '7 mogudah lever, spisl;

ing and closing the srvszitcligspying-f11minsw tending to swing sa'id lever -vto zciosetiid switchgie' trigger arranged he helil saidlever ni e 'arxsanged to bc swmigat will'w fwi easp v Qmeams ltendihgte; holdi sail irigin; ewitcl-i opennpbsition, .sai d t gen? in; positien'gengagihg: and; heldiizgii'said 'l-ever vsrith. the s wijtch opemn one wa'yyclakch I device? fer- Q said jleve-rar including a:

projecta-ble,laztchiihlrflmgcd .t'ebe ptejgcbed latterinswi FREDERICK M i 

